Eryn Milbar in Harlindon (LotRO map)

Eryn Milbar

"Beloved Forest Home"
         eryn - S. forest, wood of trees.
         milbar - S. dear home, beloved dwelling [place] (Q. mélamar)

... “home” in its emotional uses as the place of one’s birth, or the familiar places from which one was separated by journeys of necessity, or driven out by war.
- J.R.R.Tolkien (PE17/164)

Eryn Mibar is the name that Feveren's merry Green-elven clan gave to their home within the vast greenwood of Harlindon, and it was thus never formally recognised by Ereinion Gil-galad, the Lord of Lindon (and last High King of Noldor), or by his successor, Círdan the Shipwright, after he perished in the Siege of Barad-dûr.

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((Of course, Eryn Milbar is not canon at all as I invented it when I discovered the word milbar and thought it apropos to Feveren's wandering clan. Indeed, canonically there's no evidence that any Green-elves at all still dwelt within the remnants of Ossiriand in the Third Age, following the departure of the hosts of Oropher and Galadriel early in the Second Age.))

"In the Great Battle and the tumults of the fall of Thangorodrim there were mighty convulsions in the earth, and Beleriand was broken and laid waste; and northward and westward many lands sank beneath the waters of the Great Sea. In the east, in Ossiriand, the walls of Ered Luin were broken, and a great gap was made in them towards the south, and a gulf of the sea flowed in. Into that gulf the River Lhûn fell by a new course, and it was called therefore the Gulf of Lhûn. That country had of old been named Lindon by the Noldor, and this name it bore thereafter; and many of the Eldar still dwelt there, lingering, unwilling yet to forsake Beleriand where they had fought and laboured long. Gil-galad son of Fingon was their king, and with him was Elrond Half-elven, son of Eärendil the Mariner and brother of Elros first king of Númenor."

   - The Silmarillion, "Of the Rings of Power and the Third Age"

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"Harlindon: Lindon south of the Gulf of Lune."

"The regions of Forlindon and Harlindon were inhabited by Elves and were the chief part of Gil-galad's kingdom, which extended, north of the Gulf of Lune, to include the lands east of the Blue Mountains and west of the River Lune as far as the inflow of the Little Lune. (Beyond that was Dwarf territory.)"

"Gil-galad's people were mainly Noldorin; though in the Second Age the Elves of Harlindon were mainly Sindarin, and the region was a fief under the rule of Celeborn"

- The Peoples of Middle-earth, "Late Writings: Of Dwarves and Men"